From: Jan Blunck <jblu...@infradead.org>
Signed-off-by: Jan Blunck <jblu...@infradead.org>
Signed-off-by: Gaetan Rivet <gaetan.ri...@6wind.com>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 +
lib/librte_eal/common/eal_common_bus.c | 25 +++++++++++++++++++++++++
lib/librte_eal/common/include/rte_bus.h | 23 +++++++++++++++++++++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 50 insertions(+)
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index f1a0765..21640d6 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -164,6 +164,7 @@ DPDK_17.05 {
rte_bus_find;
rte_bus_find_by_device;
+ rte_bus_find_device;
rte_cpu_is_supported;
rte_log_dump;
rte_log_register;
diff --git a/lib/librte_eal/common/eal_common_bus.c
b/lib/librte_eal/common/eal_common_bus.c
index 811aff3..632a6e7 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -182,3 +182,28 @@ struct rte_bus *rte_bus_find_by_device(const struct
rte_device *dev)
{
return rte_bus_find(bus_find_device, (const void *)dev);
}
+
+struct rte_device *
+rte_bus_find_device(const struct rte_device *start,
+ rte_dev_match_t match, const void *data)
+{
+ struct rte_bus *bus;
+ struct rte_device *dev = NULL;
+ int start_seen = 0;
+
+ TAILQ_FOREACH(bus, &rte_bus_list, next) {
+ if (!bus->find_device)
+ continue;
+ if (!!start ^ start_seen) {
+ dev = bus->find_device(cmp_rte_device, start);
+ if (dev)
+ start_seen = 1;
+ else
+ continue;
+ }
+ dev = bus->find_device(match, data);
+ if (dev)
+ break;
+ }
+ return dev;
+}
diff --git a/lib/librte_eal/common/include/rte_bus.h
b/lib/librte_eal/common/include/rte_bus.h
index 0664662..b56018f 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -180,6 +180,29 @@ typedef int (*rte_bus_match_t)(const struct rte_bus *bus,
const void *data);
struct rte_bus *rte_bus_find(rte_bus_match_t match, const void *data);
/**
+ * Bus iterator to find a particular device.
+ *
+ * If the callback returns non-zero this function will stop iterating over any
+ * more buses and devices. To continue a search the device of a previous search
+ * is passed via the start parameters.
+ *
+ * @param start
+ * Start device of the iteration
+ *
+ * @param match
+ * Callback function to check device
+ *
+ * @param data
+ * Data to pass to match callback
+ *
+ * @return
+ * A pointer to a rte_bus structure or NULL in case no bus matches
+ */
+struct rte_device *
+rte_bus_find_device(const struct rte_device *start,
+ rte_dev_match_t match, const void *data);
+
+/**
* Find the registered bus for a particular device.
*/
struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev);
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 6f77222..e0a056d 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -168,6 +168,7 @@ DPDK_17.05 {
rte_bus_find;
rte_bus_find_by_device;
+ rte_bus_find_device;
rte_cpu_is_supported;
rte_intr_free_epoll_fd;
rte_log_dump;
--
2.1.4
